402 
Recent Publications. 
tables of the geological distribution of genera. The present part is il¬ 
lustrated by nearly 400 excellent wood cuts. The second half of the 
work, comprising the remainder of the invertebrates, the vertebrates 
and the plants is promised during the year, and is probably now reMy 
for distribution. _ C. R. K. 
RECENT PUBLICATIONS. 
1. State and Government reports. 
Eighth annual report of the state mineralogist of California, Wm. Ire- 
lan; for the year ending Oct. 1, 1888, pp. 948, plates and sections. 
2. Proceedings of scientific societies. 
The coral reefs of the Hawaiian islands. By Alexander Agassiz. 
Bulletin of the Museum of Comparative zoology, vol. xvii, No. 3. April, 
1889. 
3. Papers in Scientific Journals. 
The Canadian record of Science, vol. hi, No. 6. Glaciation of eastern 
Canada. Robert Chalmers. Gypsum deposits in northern Manitoba. 
J. B. Tyrrell. Classification of Cambrian rocks in Arcadia; Supple¬ 
mentary note, G. F. Matthew. Archseocyathus, Billings, and other 
genera allied thereto. G. J. Hinde. 
Amer. Jour. Sci., May No. Marine shells and fragments of shells in 
the till near Boston, Warren Upham. Stratigraphic position of the 
Olenellus fauna of North America. Chas. D. Walcott. Earthquakes 
of California, Edward S. Holden, 
4. Excerpts and individual publications. 
The Cretaceous and Tertiary geology of the Sergipe-Alagoas basin of 
Brazil, J. C. Branner.. From Trans. Am. Phil. Soc., vol. xvi. 
The probable cause of the displacement of beach-lines, with two 
supplementary notes. A. Blytt. 
The physical features of New England; two chapters on the physi¬ 
cal geography and the climate of New England. By William Morris 
Davis. With two colored maps. Reprinted from The butterflies 
of New England by Samuel H. Scudder. 1888; 
Marine shells and the fragments of shells in the till near Boston. 
By Warren Upham'. Proc. Bos. Soc. Nat. Hist. vol. xxiv, 1888. 
Meteoric iron from Arkansas, 1886. By George F. Kunz. Proc 
U. S. Nat. Museum, vol. x. 1887. 
Precious stones, abstract from Mineral resources of the United States, 
1887. By George F. Kunz, 1888. 
Ventura county, Cal. By Dr. Stephen Bowers; from the Eighth 
Annual report of the State Mineralogist, 1888. 
Some American contributions to meteorology. William Morris 
Davis. Journal of the Franklin Institute. Feb.—March, 1889.. 
Geographic methods in geologic investigation. Wm. M. Davis. 
National geographic magazine, vol. i, No. i. 
The ash bed at Meriden and its structural relations. Wm. M. Davis. 
Proc. Meriden Scientific Association, Dec. 1888. 
CORRESPONDENCE. 
Solubility of Phosphates in Iron Ores. In studying to find a 
more rapid method for the determination of the insoluble phosphor¬ 
us, I found by referring to several works on mineralogy that all the 
